Twister stop-motion.



PATENTED MAY 26, 1908.

A. E. RHOADES.

TWISTER STOP- MOTION. APPLICATION IILBD'OOTJZK, 1907,

4 rs: mamas PETER s 60., WASHINGTON. L. c.

UNITED STATES PATENT OFFICE.

ALONZO E. RHOADES, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR To DRAPER-OOMPANY,

OF HorEDALn, MASSACHUSETTS, A CORPORATION OF MAINE.

TWISTER STOP-MOTION.

Patented May 2c, 1908.

Application filed October 22, 1907. Serial No. 398,605.

To all whom it may concern:

Be it known that I, ALONZO E. RHOADES, a citizen of the United States, and resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Twister Stop-Motions, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts. i

This invention relates to twisting machines, and has for its object the production of a novel stop-motion device to sto automatically the rotation of the top-rol upon the breakage of an end.

In one well-known form of twister stopmotion a tongue is held in inoperative position by the thread or end, and upon breakage thereof the tongue is moved into position to be drawn in between the top and bottom rolls, stopriing rotation of the former.

Herein provide means to effect automatically the separation of the rolls when the ends break, but I obviate altogether the use of a tongue or similar device, separation of the rolls being effected by or through the action of gravity.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following clalms.

Figure 1 is a transverse sectional detail of a portion of a twisting machine, with one embodiment of my invention applied thereto, showing the stop-motion in normal, inoperative condition, on the line 1-1, Fig. 3, looking toward the left; Fig. 2 is a similar view but showing an end broken and the stop-motion as having operated to permit separation of the rolls Fig. 3 is a top plan view of the mechanism shown in Fig. 1.

The bottom roll I), mounted in suitable fixed bearings, as b and positively driven as usual, the finger-board f and the ig tails, as f, mounted thereon, one for eac1 thread or end to, Fig. 1, may be and are of usual or well known construction in twisting machines, the end leading to the rolls from a guide-eye or pig-tail d in a transverse-bar (1*, as shown in Fig. 1.

In'the present embodiment of my invention the top roll a driven by surface contact with the bottom roll I), is provided at its ends with journals 0. which are adapted to at times roll upon parallel guides 1 inclined slightly from the front to the rear of the frame, said guides being herein shown as elongated shoulders formed on the opposite faces of adjacent arms 2 forwardly extended from a head 3 mounted on the bottom roll stands B secured to the top rail h of the frame.

The arms 2 are upturned at the front ends of the guides at 4, to form sto s limiting forward movement of the top ro 1, when it is in operative position. When in such position, Figs. 1 and 3, said roll rests upon the bottom roll I) and the journals a are lifted clear of the guides, see Fig. 1, and I have provided a controller, governed by or cooperating with the intact thread or end, to maintain the top roll in such position until the end fails either by breakage or running out. The controller is shown as a rocking frame comprising sides 5 having each a lateral pivot stud 6 mounted in a seat in the bottom of the adjacent arm 2 of the head 3, the studs being held in their seats by caps 7, the controller rocking between the guides 1, see Fig. 3. The rear ends of the controller-sides are rigidly connected by a cross-bar 9, and each of the sides is upturned at 10, behind the journals 0. of the top roll. One of the sides has a forward extension 8 to which is fixedly secured a curved wire leg 11 terminating in a guide-eye 12, through which the end w is led as it passes from the roll I) to the pig-tail f, as in Fig. 1. The tension of the thread or end to depresses the leg 11 and holds the controller up in the position shown in Fig. 1, the parts 10 acting against the journals a to keep them forward, with the top roll a in operative position. When the end fails the leg 11 is released and the weight of the top roll acting through its journals upon the upturned portions 10 at once rocks the controller into inoperative position, Fig. 2, so that the journals a rest upon the guides 1 and roll down the same rearwardly, separating the two rolls a and b and stopping rotation of the former.

The extension 8 has a shoulder 8 thereon to engage the adjacent cap 7 when the controller is released, to limit the rearward rocking of said controller, as shown in Fig. 2, and maintaining the parts 10 in position behind the roll journals 0, to serve as limiting stops therefor. When the end is pieced up and inserted between the rolls it is passed through the guide-eye 12 and the pig-tail f, and the operator swings down the leg 11, restoring the controller to operative position, Fig. 1, and thereby moving the top roll forward upon and into driving contact with the bottom roll.

If desired the thread or end may be led from the traversing-eye (1 under the crossbar 9 of the controller and then up over the top roll, around it and over the bottom roll, and thence direct to the pig-tail f. When so threaded up the tension of the thread acts upon the controller through the rod 9 to maintain said controller and the top roll in operative position. The portions 10 of the controller constitute movable bearings for the top roll, movement of such bearings when an end fails enabling the top roll to separate from the bottom roll by the action of gravity.

The device is simple, effective, and quickly responsive to the failure of an end, and the separation of the rolls is effected by gravity acting upon the top roll, obviating the use of means to move the top roll, and eliminating a tongue or similar device to enter between and thereby separate the rolls.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a twister stop-motion, top and bottom rolls, the former adapted to rest upon and be driven by the latter and having end journals, rearwardly inclined guides upon which the journals directly impinge and travel to separate the rolls, and a controller to cooperate with an intact end and act upon the journals of and retain the top roll in engagement with the bottom roll to be driven thereby, failure of the end releasing the con troller and permitting the top roll journals to trslilvel on the guides away from the bottom ro 2. In a twister stop-motion, a bottom roll,

a top roll adapted to engage and be driven by the bottom roll, rearwardly inclined guides for and along which the top roll may revolve and travel away from the bottom roll, and a pivotally mounted controller governed by an intact end and normally cooperating directly with the top roll to maintain it in 1operative engagement with the bottom rol 3. In a twister stop-motion, a bottom roll, a top roll to normally rest upon and be driven by the bottom roll, inclined guides for and upon which the top roll may revolve and thereby travel away from the bottom roll, and means governed by an intact end to directly cooperate with and retain the top roll in operative engagement with the bottom roll, failure of the end rendering said means inoperative and permitting the top roll to engage and travel upon the inclined guides out of engagement with the bottom roll.

4. In a twister stop-motion, a bottom roll, a top roll adapted to engage and be driven by the bottom roll, rearwardly and downwardly inclined guides for and along which the top roll may revolve and travel away from the. bottom roll, a pivotallymounted controller cooperating directly with the top roll, a device on the controller to engage an intact end and maintain the controller in position to retain the top roll in contact with and be driven by the bottom roll, and a stop to limit movement of the controller when released by failure of the end.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses:

FRANK J. DUTCHER, O. N. NICHOLS. 

